Rock-drill.



No. 691,556. Patented Jan. 2i, 1902.

. H. LEINEWEBEBQ BUCK nmu.

'(Applicatbn filed. May 27, 1901.)

(N5 Model.) 1

No. Q9L556; Patented Jan. 2|, I902.

H. LEINEWEB ER. ROCK DRILL.

I (Application filed May 27, 1901.) (No Model.) 7 $heets-Sheet 2.

- No. 691,556. Patented Ian. 2|, I902.

H. LEINEWEBER.

BUCK DRILL.

(Application filed May 27, 1901.)

(1% Model.)

7 Sheets-Shea! 3.

Patented J an. 2|, I902.

H. LEINEWEBER.

. ROGKDRILL. (Appli cation filed May 27, 1901.

7 Shani-Shag: 4.

(No Model.)

H.. LEINEWEBEB.

BUCK DRILL.

N 0 M 0 d e I 7 8h aaaaaaaaaa s.

qlumugg i Patented Jan. 2|, I902.

N0. 69|,556. Patented Jan. 2|, 1902.

H. LEIN EWEBER. ROCK DRILL.

(Application filed May 27, 1901.)

(No Model.) 7 Shams-Sheet 6.

' 30 tion taken on line 6 in Figs'l and Fig. 7,

5 on line 8 in Fig. 2; Fig. 9,2. section-on line 9 50 shown in Fig. 5.

' NITED fS'rAT-Es m A LABLE copy PATENT, OFFIQE.

'.HERM'AN nrnnwnpna; or- CHICAGO, ILLINODIIS, ASSIGNOR 'r'o f1. inn- LPNEUMA'IIIO ToonootrPANY, A conroRA'rIon. on lLLlNOIS.

R OCK- umLL.

smolsloerxozr forming part; r Letters iatent no. 591,556, dated d'anuary21, 1902 vApplicatlmi filed May d7, 19 0l 1'0 ad whom it may concern:

V Be it known that-I, HERMAN LEINEWEBER,

a citizen of theUnitedStates, residing at'Chi cago, in the county ofCook; andState of .Illi

5 nois, have invented a new and useful Rock- Drill, of which thefollowing is a specification;

My invention relates to improvements in lfluid-actuated drillsgenerally, and-more especially in pneumatic rock-drills.

:0 My object is to. provide .a drilling implement of a comparativelysimple and generaliyimprovedfconstruction for use more especially inmining and wherein the motive fluid besides operatingthedrill-h'a'mmer-also In the drawings, in which my invention is appliedtoapneumatic rock-drill for use in mines,Figure. l is a broken sideelevation of the device mounted upon a support, which is shown insection; Fig. 2, an enlarged broken and longitudinal section of the rearend portion of the device, showing a rotary engine or motorfor turningthe drill; Fig. 3, an enlarged brokenandlongitudinal section of thedeviceat its support on line 3 in Fig.4; Fig. 4, a broken section takenon line tin Figs. 1 and 3; Fig. 5, an enlarged. broken andlon' gitndinalsection of the forward or pneumaticham 1ner-port ion o'fth device; Fig.6, a seean enlarged perspective view of a slide-valve forming partof.the'constrnction of the pneumatic hammer; Fig. 8, asectional rear endview of the device, the section being taken I in Figs. 1, 2, and 10;Fig. 10, a section taken on the irregular li ne 10 10in Fig. 8;' Fig.11,

a section taken o'n'line 11 in Figs. 1, 2, and i0; and Fig. 12, a vie wthe same as Fig. 11,

4 0 but withparts removed and other parts shown in broken section.

A -is a tubular casing containing the pneumatic-hammer mechanism andprovided in it's forward end with a drill-receiving chuck a.

5 The casingAis upon the end of a shat'tB andis, in efiect,a partthereof. The shaft carries a bushing b,- which fits in the end portionof the casing, the bushing being fastened to the shaft by means ot'v across-pin b, as

A pin 1) passes through the casing, bushing, and shaft to fasten themsodogs 0''. x5 furnishes power to turn and feed-the drill.

Serialll'o. 52.120. (No model.)

curely' together. Loosely surrounding the shaft B is 'athreaded sleeveor'feed-screw B,

fitting at one end loosely into an annular socket b in the rear end ofthe casing A and 551 provided at its-rear end with a clutch member Binthe form of a ratchet-wheel. (See -Fig. 11;) -'On the shaft 13 is'a disk(2, fastened rigidly tothe shaft by means of set-screws c, Fig. 12; Thedisk 0 has an annular ilange oo 0 extending over the ratchet Bandfintegral with the disk and extending inward from the flange atdiametrically oppositesides are COKed bosses C; presenting radialguide-open- 030 are ratchet-engaging plungers o'r-dogs having heads '01,formed with ratchet-engagjug teeth or projections d, the heads beingupon the ends of shanks or stems'd movable in the guide-openings c.Extending trans- 7o versely across the openings 0'' are pins 0 andconfined between the pins 0 and heads (1 are springs (i which tendnormally to press the dogs (J into engagement with the ratchet B Theoperation of the dogs and ratchet is like that of a friction-clutch,and, in eifect, they constitute 'a friction-clutch as the parts turn inthe direction of the arrows in 11.

D is the casing of a rotary pneumatic engine or motor formed withcentral bearings ,e e', Fig. 2, for the rear end of the'shaft B.

In the casing'D is a chamber D, closed at its -forward side by a disk orcylinder head D Extending longitudinally and centrally through the shaftBis an opening'or passage B, which reachesfr'om the rear end nearly tothe forward end of the shaft, where it turns outward through the side ofthe shaft and' bushing b to produce the opening B, On p the rear wall orend of the'casing D-is aboss 0 D and extending into one side thereof isa. cored passage f, leading to cored passages f f Interposed in thepassages f f are valves 9 g, respectively, working throughstnfifingboxes g g, respectively, and having handles 5' g 9.respectively. The passage f leads to and registers with the end of thepassage B in the shaft 13. The passage f leads to branch passages f ff,Fig. 10. Coupled to the boss D at the opening or passage f is a zoocompressed-air-supplying hose Y. The circumferential wall of the chamberD forms an annular bearing-surface h, and the bearfrom eachother in thewheel are radial recesses k, in which are'placed radially-slidin gblades or wings k of angular shape, as best shown in Fig; 2. Theseradially sliding blades are of .a width corresponding to the width ofthe arm ular groove is, and their inner ends are reduced, as shown. ThecasingD is formedat diametrically opposite sides with projections orears D, Fig. 8, with openings between them through the circumferentialwall of. the casing. Fitting into these openings are tendingcam-surfaces B1 cam-blocks F F, fastened in place by means of pins 1'.On the inner faces of the blocks F F are inwardly-projecting parts l,which extend into and conform in cross section' to the groove 70 of thewheel E, and they present along opposite end portionslongitud inally-ex-The central boss h is cut away opposite the cams Z 1 as shown in Fig. 9,to present recesses h the base-lines of whichconform to and are parallelwith the lines of the cams Z 1 Extending through the blocks F F at theircam-surfaces Z are air-inlet ports m, and extending through the blocksat their cam-surfaces Z are exhaustports 17.. The ports m communicatewith the air-supply passages f f, and the-ports n lead to the outsideair.. The projections Z form stationary abutments in the groove orrecess 70, and the cams P1 and wall it form the outer guide-surfacealong which the wings it? move and against which they are held bycentrifu gal force to slide. Air entering through the ports m to thegroove 70 in the wheel bears against the wings k and forces the wheeland shaft B around. When the .wings reach the cam surface Z and surfacesh, they are guided radially inward, permitting the air to escape throughthe outlet-ports at. As thewings pass the abutments they slide outwardalong the cam-surfaces Z past the inlet-ports m, and are propelledforward by the air entering at said inlets. The cam-blocks F areremovable to give access to the interior of the motor-chamber, and theymay be replaced by new blocks at little expense in the event that theircam-surfaces become worn. The wheel E and shaft B are rotatedcontinuously while the air-pres'sureis on, and this air-pressu re mayberegulated or entirely shut olf by tu rning the valve 9'. Inthe casin g Ais pneumatic-ham mer mechanism of a construction similar-in the main tothat shown in Letters Patent of the United States No. 662,675, grantedNovember 27, 1900, to George Lei'ninger and myself jointly.

The casing A contains a cylindrical chamber divided by a partition pintotwo compartments 11 11 In the compartment p is a piston q, and inthe compartmentp is a combiued. piston and ham mer-head q. The pistonsare connected by a stem g passing through a guide-opening in the centerof the partition. opening in which works a slide valve 1 In the ends ofthevalve r are recesses 'r' 1', re-

Also in the partition 'is a guidespectively, and in the opposite .sideof the valve are longitudinally -\extending groovesr 0 Cored in theshell A is an air-supply passage 8, communicating with the end B of thepassage B an'd provided in its oppositeend with closely-adjacent ports 3s which pass through the edge of the partition 19 to the guide-openingin which the slide-valve '1' works. Extending from the outside of thecasing through the partition 1) to the said guide-opening is a vet:t-passage 'i, registering with the groover of the slide-valve. Alsopassing'thr'ough the partition'from the outer side of the shell to thesaid guide-openingis a spring-pressed pin t',w-hich engages the groove7" in the slide-valve to prevent the latters turning. Air to operate thepneumatic hammer enters through the passages f, B and s and iscontrolled by the valve g. 111 the shell Aarethe exhaust-ports v, 'v', c,an d v located as shown. When the parts are in the position shown inFig. 5, the slide-valve 'r closes the port 8' and opens the port swhereby the air enters to the compartmentp against the piston q-, andforces said piston or-hammer'forward. As the sai'd'piston nears the endof its stroke the piston q engages the valve r and slides it until itcloses the port 3? and opens the port s' The action of the pistons isthen reversed. While the pistons are being forced in the forwarddirection, air is vented from the compartment 19 through the ports 12while air is vented from the compartment p through the groove 1- in thevalveand port t. In the reverse movement of the pistons air from thecompartmentzo is vented through the groove r and passage t, and the airin the compartment 29 infront of the piston is vented through the port0. When the piston is forced forward to the end of its stroke, thecompressed air behind the piston q vents through the opening 22 while atthe end of the retnrnstroke the compressed air behind the piston q ventsthrough the port the hammer strikes.

'0 In the chuck a is a drill X, against which.

may be provided. In the construction illustrated in Fig. 1 thesupport-cemp'rises a pair of standards G, one only being 'shown-,--thestandards being provided at their lower ends with jacks G, whereby theymay be tightened in place. Adjustable up and down upon the standards isa shaft or cross-bar G H is a bearing block or collar, and formedintegral therewith is a split collar H, which may surround the shaftGahd be fastened thereto in any adjusted position by meansot'the'tightening-screw H The collar. H may be turned to any angle orposition-upon the shaft Cl and tightened when adjusted. Best.-

ing upon the collar H is a supporting-head I,- provided with adownwardly-extending shaft .I, passing through the bearing-collar H.

On the vertical shaft 1, atthe under side of the collar H, is abracket-arm K, held in place upon the shaftl by nuts 1 -'Pheabracket-arm K has a smooth upper face, with guide-flanges K at oppositesides. The casiing D is'formed at itsjunder sidewith an an: gular ordovetail socket D to fit over the guide-flanges K and slide thereon."Extending through the head I is a smooth opening 1 for the feed-screw Bto pass through; In

opposite sides of the head 1 are slots 'lfto receive laterally-slidingsectional nuts 1 to engage the feed-screw: iassingtransversely throughthe head-I is a shaft 1, provided to ward opposite ends, respectively,with right and left hand screw-threads to engage'thread-v ed openings inthe said sectional nuts.

a'pin'l", whereby the shaft may be rotated,- but is held againstlongitudinalmovement. The sectionalnuts- I are shaped to engage and-.,release, the feed-screw B. On the shaft 1 is a handle 1., which whenturned to the stop 1 in Fig. 1 moves the sectional nuts into engagementwith the feed-screw B 'andwhen turned to the stop 1 moves the dogs 'outof engagement with the said feed-screw.'

said, in adjusted position by means of the desired angle;

screw H The shaft 1, passing through the collar Il', forms a swivelconnection whereby the drill and bracket K may be turned to any Thevalve g may be opened far enough toadmit the desired amount of pressureto the hammer to cause the same to work with the speed and forcedesired. The

valve 9 may be opened far enough to admit the necessary amount ofpressure to cause the rotary motor to turn the shaft B with' the speedand power desired. The operator will be able to j udgeof thepowerandspeed heisgetting during the operation and manipulate the valves9 g accordingly. The hammer device;

may be operated to produce impacts against the end of the drill X withgreat speed and force, and it will be a simple matter to regulate theturning of the drill in accordance with the character of the rock beingoperated upon. Tofeed the drill forward, the operator turns the handle 1to the stop 1 causing the sectional nut'l to engage the feed-screw B.

. As before explained,.the feed-screw B is held to the shaft by theengagement of the spring- Mid-- way between ends the shaft 1 hasanannular recess 1', into which projects the end of dogs C with theratchet B .When the re 4 sist ance to the feed is greater thandesired,.;the dogs will wipe over the ratchet-teeth. -The springs d on the dogsare sufficiently-stiff to cause. the dogs to engage with desiredforceth'e slanting sides of the ratchet-,teeth and "formfrictionally-held feeding means, and

they wills'lide over the teethwhenever-thc resistanceto the feed isgreater than desired.

Byleaving the sectional, nut 1 in engagement; with thefeed-screwahejfeedof the drill will be properly maintained by the chitchmechanis'm C B,-and no-accidentto the ,mechan ism can happen by. reason ofovercrowding'th'e feed.-. It win he understood that as the drill 7 isfed'forward the casing D inovesforward upon the guide-flanges K of thebracket-arm K. -When: thehole; has been madeby the .drill, the handle Imay be turned back to the stop 11 to release the sectional nut 1 fromthe feed-screw, when the parts may bereadily slid on the bracket K tothe initial position, (shown in Fig.1,) withdrawing thedrill from thehole.

Whenever it is desired to use the device as an anger alone, as indrilling throughsofb rockor material, the hammer may-be shut off and theturningand feeding mechanisms alone actuated. When desired, the rotarymotor may. be thrown out of operation while the hammer is in operation.

While I prefer to construct-my improve-' mentsthroughout as shown anddescribed, they may be variously modified in the matterof detailswithout departing from the spirit of my invention as defined by theclaims.

What I claim as new, and desireto secure by Letters Patent, is-- l In arock-drill, the combination with a drill-holder of afluid-pressure-act-uated hammering device on the drill-holder, and afluidpressure-actuated rotary motor on the drillholder operating to turnand advance it.

2. In a rock-drill, the combination of a drillholding shaft, afluid-pressurc-actuated drillhammering device on the shaft, afluid-pressure-actuated rotary motor on the shaft operating to turn it,a feed-screw upon the shaft, and relatively stationary,fced-screw-engaging means for advancing the rotary shaft. 3.Inarock-drill, the combination of adrill holding shaft, afluid-pressure-actuated drillhammering device on the, shaft, a fiuid-pres-- sure-actuated rotary motor on. the shaft operating 'to'turnit, a feed-screw upon the shaft, a. friction-clutch between thefeed-screw and shaft, and relatively stationary feed-screwengaging meansfor advancigg the rotating feed-screw and shaft.

4.- In a rock-d rill, the combination of-ashaft, a drill-holding casingon; the forward end ofthe shaft, fluid-pressure-actnated drill-hammeningmechanism in said casing, a fluid-pressure-actuatedshaft-turning rotarymotor on the rear end portion of the shaft, and shaftadvancingfeed-screwmechanism between the I and 'estending into the groove of saidwheel,

' motive-fluid inlet and outlet portsat opposite I snpport of a.drill-holding shaft, a fluid-prestsure-actuated drill-hammering deviceon the 5. In a rockdrill,the combination ofashaft,

the shaft, fiuid-pressure-actuated drill-hammering mechanismin saidcasing,a fluid-presfor advancing the; rotating shaft.

wheel fixe'dto'the shaft, a relatively stationin said wheel movable insliding contact with g for. the drill-holder, and means for throwing thehammering mechanism into and out of a drill-holdingcasingbn the forwardend of sure-actuated shaft-turning rotary motor on the rear end portionof the shaft, shaft-advancing feed-screw mechanism between the saidcasing and motor, and a fluid pressure-supply passage extendin glongitudinall y through the shaft to said casing.

6. In a rock-drill, the combination with a forward end of the shaft, acasing on the opposite end portion of the shaft slidingly mounted onsaid support, a finid-pressure-actnated shaft-turning rotary motor insaid casin g, and shaft engaging and releasing feed mechanism '7. In arock-drilh'the combination with a drill-holding shaft of 'ashaft-turning rotary. motor comprising a. peripherally -'g'rooved arychamberhav'inga cylindrical bearing-wall about the wheel, camsinterposed in said wall ends of said'cams, and radially-sliding wingssaid bearing-wall andicams, substantially as dias'cribed.

8. In a drillingdevice, the combination of a drill-holder,-fluid-pressnre-actu ated drillhammeringmechanism thereon, separatefl'uid-pressnre-actuated rotating mechanism feeding means forthedrill-holder, and seps'trate fiuid-pressnre-cont-rolling means for thehammering and rotating mechanismswhereby they may becansed to 'operatetogether, or

either may be thrown out of operation independently of the other.

11. In a drilling device, the combination of a drill-holder,fluid-'pressure-actuated drillhammering mechanism thereon, separatefluid-pressni e-actuated rotating mechanismfor' the drill-holder,flnid-pressure-actnated feeding means for the drill-holder, and sepa--rate controlling meansfor thehammering, rotating and feeding mechanisms,whereby either. may be thrown out of operation, substantially, as andfor the purpose set forth.

12. Ina rock-drill, the combination witha drill-holding shaft of ashaft-turning rotary motor comprising a peripherally -'grooved wheelfixed to the shaft, a relatively stationary chamber having a cylindricalbearing-wall about the wheel, removable, and replaceable cam-blocksinterposed in said wall and extending into the groove of said wheel, motive- .-flnid inlet and outlet ports in the cam-blocks andradially-sliding wings in said wheel movable in sliding contact withsaid bearing-wall and cam-blocks, substantially as described.

13. In a rock-drill, the combination with a support of a drill-holdingshaft, a fluid-pressure-actuated drill-hammering device on the forwardend of the shaft, a casing on the opposite end portion of theshaft-slidingly mounted on.said support, a fiuid-pressureactuatedshaft-turning rotary motor in said a casing, a feed-screw upon theshaft, a.frictionclutch between said shaft' and fecd-screw,

and feed-'screw-engaging means on the support for advancing the rotatingfeed-screw and shaft. I i

14. In a rock-drill, the combination with a suppor t'of a drill-holdingshaft, a fluid-pressure-actuated drill-hammering device on the forwardend of the shaft, a casing on the opposite end portion of the shaftslidingl'y mounted on said support, a fluid-pressure actuated shafttnrning rotary motor in said casing, a feed-screw upon the shaft, afriction-clutch between said shaft andfeed-screw, and an adjustablefeed-screw engaging and releasing sectional nut on' the support foradvancing the rotating feed-screw and shaft,

-.subst antially as described.

HERMAN LEINEWEBER. I Inpi'esence of-.

ALBERT D. BAcox, D. W.-LEE.

Ice

